File-editing.

@e7

 : To use the vi editor to edit the output-file fort.7.

@e8

 : To use the vi editor to edit the output-file fort.8.

@e9

 : To use the vi editor to edit the output-file fort.9.

@j7

 : To use the SGI jot editor to edit the output-file fort.7.

@j8

 : To use the SGI jot editor to edit the output-file fort.8.

@j9

 : To use the SGI jot editor to edit the output-file fort.9.